Nigel Farage’s Brexit Party is on course for major success in the European election later this month, and would alter the landscape of British politics if a general election were held in the U.K., according to new polling.

A poll by Opinium for the Observer puts the Brexit Party on 34 percent of the vote — more than the Conservative and Labour parties combined — in the European election in late May. That’s an increase of 6 percentage points for Farage’s party since the last Opinium poll, on April 23.

Labour comes in second on 21 percent (down 7 percentage points since April), with the Tories on 11 percent of the vote, in fourth place behind the Liberal Democrats. The new pro-Remain party Change UK is on 3 percent support, behind the Greens, UKIP and the Scottish National Party. Opinium polled 2,004 people online between May 8-10.